Abstract An apparatus for visual instruction comprises a substantially planar translucent screen which may be either in the form of a sheet of transparent plastic having one matte surface and one transparent surface or a thin sheet of homogeneous translucent but nontransparent material. One surface of the screen is used as an observation surface by the students. There is provided a writing instrument for depositing an erasable writing medium on the reverse surface of the screen to form alphanumeric characters and a light source movable with the writing instrument is focused to direct a beam on the reverse surface substantially in registry with the point of deposition of the writing medium. In using the writing instrument, each character written on the reverse side is reversed from left to right and the order of the characters is also reversed from left to right so that a student sees the characters in proper form and order on the observation surface of the screen.
The method of visual instruction of students having visual perceptual handicaps utilizing a substantially planar translucent screen having an observation surface and a reverse surface which comprises: writing alphanumeric characters on the reverse surface of the screen with an erasable writing medium, each character being reversed from left to right and the order of the characters also being reversed from left to right; and simultaneously projecting a beam of light on the reverse surface of the screen substantially in registry with and moving with the writing as the characters are formed, whereby a student sees the characters in proper form and order on the observation surface of the screen.
Claim 2
Independent Claim
109 words
The method of visual instruction of students having visual perceptual handicaps utilizing a substantially planar translucent screen having an observation surface and a reverse surface which comprises: writing alphanumeric characters on the reverse surface of the screen with an erasable writing medium, each character being reversed from left to right and the order of the characters also being reversed from left to right; and simultaneously projecting a beam of light on the reverse surface of the screen substantially in registry with and moving with the writing as the characters are formed, whereby a student sees the characters in proper form and order on the observation surface of the screen.